Door-lock.



G. H. DAY.

DOOR LOCK.

APPLICATION FILED FEB. 10, 1909.

922,675 Patented May 25,1909

tlbllfi l llh GEORGE l-I. DAY, OF SOUTHBRIDGE, MASSACHUSETTS.

DGOR-LOCK.

Application filed. February 10, 1909.

To all whom it may concern:

Be it known that I, GEORGE H. DAY, a citizen of the United States,residing at Southbridge, county of Worcester, and State ofMassachusetts, have invented an Improvement in Door-Locks, of which thefollowing description, in connection with the accomp anying drawing, isa specification, like numerals on the drawing representing like parts.

This invention has for its object to provide a novel lock which isespecially designed to be used for locking sliding doors, although thelock is capable of use in a great variety of other locations where twoparts are to be locked together.

The device comprises a locking member carried by one of the parts to belooked and adapted to enter and engage in a recess in the other part,and an actuator supported by the other part and adapted by its movementto throw the locking member into operative position.

One embodiment of my invention will first be described and then thenovel features thereof will be pointed out in the appended claims.

Referring to the drawings, Figure 1. shows my improved look as it wouldbe used for locking a sliding door, a portion of the door and a portionof the part to which the door is locked being broken out to better showthe construction; Fig. 2 is a section on the line a-.'1:, Fig. 1.

I have herein shown my invention as it would be used in lockinga slidingdoor 3 to a door casing t, but the two parts to be locked together mightbe two sliding doors, or in other words, the part 4 might be a slidingdoor as well as the part 3, or said two parts might be any other twomembers which were to be locked together without departing from theinvention. 1 wish it distinctly understood, therefore, that my inventionis not confined in its use to locking sliding doors, and that byhereinafter referring to the part 1 as a door casing and the part 3 as asliding door, I do not limit my invention to use in this particular way.

The locking device includes a locking member 5 which is herein shown assustained by the door casing 4 and which is adapted to enter into arecess 6 formed in the edge of the door 3 and have locking engagementtherein, and an actuator 7 sustained by the door 3 and adapted by itsmovement in said door to control the movement of the locking memberSpecification of Letters Fatent.

Patented May 25, 1909.

Serial No. 277,163.

5. In the present embodiment of my invention the locking member 5 is inthe form of a lever pivoted at 8 to a holder or support 9 that issustained in a recess 10 formed in the door casing 4, and said lever isprovided at its end with the locking toe or projection 11 that isadapted to enter into the extension 12 of the recess 6 when the lookingmember is in operative position. This extension 12 may conveniently beformed by a plate 13 which is secured to the edge of the door and whichis provided with an aperture 14 through which the end of the lockingmember may project. The locking member is extended beyond the pivot 8and is provided with a tail 15 wl'iich is adapted to be engaged by oneend of an intermediate lever 16 that is also shown as pivoted to theholder 9, as at 17. The upper end of the intermediate lever 16 is inposition to be engaged by the actuator 7. This actuator may be similarto the ordinary belt of a door lock and may be actuated either by meansof a key inserted in the key hole 18 or may be provided with any othersuitable or usual mechanism for moving it in the door. The actuator 7 isnormally withdrawn entirely within the door and when it is so withdrawnthe locking member may assume the dotted line position Fig. 1.

I prefer to employ automatically-operative means, such, for instance, asa spring 20, for normally maintaining the locking member in the dottedline position, and in the present embodiment of 1 iy invention thisspring is mounted in a recess 21 formed in the holder 9 and acts againsta plunger 22 which in turn acts against the locking member 5. The holder9 may have any suitable shape and construction. I have herein shown itas provided with the two wings 23 between which the locking member andthe intermediate member are received, and in which the pintle pins 8 and17 are supported. The holder is also shown as being formed with a faceplate 24 which is fastened to the door casing in any suitable way, as bymeans of screws. This face plate is provided with an aperture 25 inwhich the end of the looking member plays, and with another aperture 26through which the actuator 7 is adapted to be projected.

When the door is unlocked the bolt or actuator 7 is withdrawn and thelocking member and intermediate member are in the dotted line positionFig. 1. In order to lock the door, the actuator 7 is projected, as seenin Fig. 1, either by means of a key or by any other suitable device, andduring its movement it acts against the intermediate mem ber 16, thusturning the latter so that the lower end thereof will act against thetail 15 of the locking member thereby to throw the locking member upinto the full line position. As the door is closed, the hooked end 11 ofthe locking member enters the aperture 14 and the movement of theactuator 7 operates to throw said end up to cause the hook or projection11 to enter the extension 12 of the recess and in behind the plate 13.The door is thereby locked and can be unlocked only by withdrawing theactuator7 thereby permitting the spring 20 to return the locking memberto its dotted line position.

It will be seen from the above that the locking member is sustained byone of the parts to be locked but is actuated by the movement of anactuator sustained in the other part to be locked. It will also beevident that the part 3 might be one member of a double sliding door,and that the part 4 might be the other member thereof, or that the twoparts 3 and 4 could be any other parts which move toward and from eachother and which are desired to be locked together. It is also possiblewith suitable modifications to use the device in connection with aswinging door as well as in connection with a sliding door. I do notwish to be limited, therefore, to the constructional details shown, asthe construction could be changed in various ways without departing fromthe invention.

Having fully described my invention, what I claim as new and desire tosecure by Letters Patent is 1. In a lock, the combination with a locking member adapted to be sustained by one of two parts to belockedtogether, of an actuator movably sustained by the other of said twoparts, and means operated by movement of the actuatorrelative to the arton which it is mounted to move the ocking member into locking position.

2. The combination with two parts to be locked together, of a movablelocking member sustained by one of said parts, the other part having arecess to receive the locking member, and a movable ac uator sustainedby said other part and adapted by its movement to move the lockingmember into looking position.

3. The combination with two parts to be locked together, of a lockingmember having an extension pivoted to one of the parts, the other parthaving a recess to receive said extension, an intermediate member alsopivoted to the first-named part, and an actuator sustained by said otherpart and adapted to engage and operate the intermediate member wherebythe latter operates the locking member. 7

4. In a lock, the combination with a locking member adapted to besustained by one of two parts to be locked together, of a spring to holdsaid lock normally in inoperative position, an actuator movably sustained by the other of said two parts and adapted by its movement tomove the locking member into operative position against the action ofthe spring.

5. In a lock, the combination with an actuator movably sustained by oneof two parts to be locked together and adapted to be projected therefromor withdrawn, of a locking member movably sustained by the other of saidtwo parts, a spring normally holding the locking member in itsinoperative position, and a pivoted intermediate lever sustained by saidsecond part and adapted to be engaged by the actuator when the latter isprojected and the two parts are in closed relation to each other wherebymovement of the intermediate lever throws the locking member intooperative position. In testimony whereof, I have signed my name to thisspecification, in the presence of two subscribing witnesses.

GEORGE H. DAY. Witnesses F. G. BLANCHARD, G. A. ORDWAY.

